Answer:
Carbon dioxide levels decreased which meant there wasn't enough in the air to support vegetation. Growth was limited, in other words, because plants were carbon-starved.
Benjamin Banneker is the answer
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Building on Greek ideas, Roman thinkers developed the concept of natural law. Remember natural law was that the idea that law governed how the world operated. With Roman and Greek ideas as guidelines the Enlightenment thinkers began to study the world in a new way. They applied these beliefs to government and society.